Something like this: http://nl.wikipedia.org/wiki/Bestand:20100714-012_Amersfoort_-_Zonnewijzer.jpg Thibaud
At 21:50 16-3-2011, Brent wrote:
Hello; I have an idea to build a mechanical sundial. It would have a moving gnomon that would track the sun. If the gnomon was a hollow pipe, a spot of light would shine out of the bottom that could be used to indicate a time and date. With all of the photo voltaic systems available now the hardware is fairly easy to find. I'm thinking I could use a simple dual axis photo sensor tracking device such as this: http://cgi.ebay.com/Complete-Solar-Tracker-Sun-Tracker-Kit-/400187219850 Has anyone seen a sun dial like my idea before? I Googled solar tracker and they also talk about a chronological tracker. That rotates one axis at the speed of the earth but in the opposite direction. That would make a fun sundial as well. Modern technology offers lots of new possibilities for sundials. Is anyone trying new designs? thanks; brent --------------------------------------------------- https://lists.uni-koeln.de/mailman/listinfo/sundial
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